Question

Answer the following questions :

a) Define the given terms :

1) Respiration

2) Photosynthesis

b) List out two uses of bacteria.

c) Why fishes are said to have a streamlined body? Name their respiratory organs.

d) What is the role of chlorophyll in photosynthesis?

e) What is the function of mcristematic tissue?

f) Differentiate between xylem and phloem.

g) Bryophytes are called amphibians of plant kingdom. Give reason​

Answer 1

Answer:

a) 1) A process by which living beings produce energy from food.

2) The process by which green plants turn carbon dioxide and water into food using energy from sunlight.

b) Fermentation processes, such as brewing, baking, and cheese and butter manufacturing.

Chemical manufacturing, such as the production of ethanol, acetone, organic acids, enzymes, and perfumes.

Pharmaceuticals, such as the manufacture of antibiotics, vaccines, and steroids.

c) It helps them by making their movement easy. Their respiratory organs are gills.

d) Chlorophyll absorbs sunlight which is essential for photosynthesis.

Explanation:

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Answer 2

a)Define the given questions:-

1.Respiration:

A process in living organisms involving the production of energy, typically with the intake of oxygen and the release of carbon dioxide from the oxidation of complex organic substances

2.Photosynthesis:

The process by which green plants and some other organisms use sunlight to synthesize nutrients from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a by-product.

b)List out two uses of bacteria:-  

Bacteria have long been used by humans to create food products such as cheese, yoghurt, pickles, soy sauce and vinegar. We are also able "to use bacteria to break down our sewage and to clean up oil spills."

c) Why fishes are said to have a streamlined body? Name their respiratory organs.

• Fishes are streamlined because the streamlined shape helps them move through the water with the least of resistance.
• The respiratory organ of fish is gills.

d)What is the role of chlorophyll in photosynthesis?

Chlorophyll is vital for photosynthesis, which allows plants to absorb energy from light. Light energy is converted into chemical energy. With photosynthesis, chlorophyll absorbs energy and then transforms water and carbon dioxide into oxygen and carbohydrates.

e)What is the function of meristematic tissue?

The Meristem is plant tissue capable of cell division forming new tissues. It actively divides cells adding new cells to plant. Meristem contains undifferentiated cells producing specialized cells structures. Apical meristem, intercalary meristem and lateral meristem are categories of Meristematic Tissue

f) Differentiate between xylem and phloem?

Xylem:-

1. Complex tissue of plants that transports water and nutrients within the plant
2. Contains dead cells with the exception of parenchyma
3. The location of xylem is deep in the plant, in the centre of vascular bundle

Phloem:-

1. Living tissue that transports food and organic materials within the plant
2. Contains of mostly living cells
3. The location of phloem is on the outer side of the plant’s vascular bundle

g)Bryophytes are called amphibians of plant kingdom. Give reason​

Amphibians are certain species that live both on earth and in water. Bryophytes are called plant kingdom amphibians even though these plants live in soil, and they require water for se.x.ual reproduction. The bryophyte sperm, which is antherozoids is flagellate and requires water to swim into the eggs. In other words, unlike other plants, Bryophytes plants involve water for reproduction they are called amphibians.

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